The spring grain-aphis
Subtitle: (Toxoptera graminum Rond.)
By: F. M. Webster
Contributors: United States. Bureau of Entomology; United States. Dept. of Agriculture
Series: Circular / U. S. Dept. of Agriculture. Bureau of Entomology -- 85; Circular (United States. Bureau of Entomology) -- no. 85.
Publisher: U.S. Dept. of Agriculture, Bureau of Entomology
Published: 1907
Place of publication: Washington, D.C
Language: eng
Subjects: Greenbug; Agricultural pests; Grain; Diseases and pests
Notes: Circular No. 85.

"Issued March 29, 1907."

At head of title:  United States Department of Agriculture, Bureau of Entomology.
Table of contents: title: Seasonal history. pp. 2.; title: Rapidity of increase. pp. 3.; title: Food plants; title: Disastrous outbreaks in America; title: Natural enemies. pp. 4.; title: Meteorological influences. pp. 5.; title: Preventive and remedial measures. pp. 6.